testivai-oss: Instructions file for Claude Code

CLAUDE.md

testivai-oss CLAUDE.md is an instructions file for Claude Code from testivai/testivai-oss. It costs 6,206 tokens per session, scanned A, original, MIT.

A repository guide for TestivAI's open-source software development kit, tools for local visual regression testing that compare screenshots to detect unwanted UI changes. It documents the repository layout, commands, packages, and architecture.

In plain words
What is it for?
Use it when changing the TestivAI SDK, its Playwright, WebdriverIO, or Selenium integrations, diff reports, MCP server, examples, documentation, end-to-end tests, or GitHub Actions.
Why use it?
It helps a coding agent work in the repository's expected structure and use the correct package manager and workflows.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions .claude-plugin; mentions Claude Code.

This is testivai/testivai-oss's own configuration. It tells Claude Code how to work on testivai-oss itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything testivai-oss configures →

Reuse

Borrowing it

Nothing to install: this file belongs to testivai/testivai-oss. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/testivai/testivai-oss/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/testivai/testivai-oss

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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Per session 6,206 This file is loaded in full into every session.
When invoked 6,206 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.06206 $0.06206
Opus 5.5 $0.02482 $0.02482
Sonnet 5.5 $0.01241 $0.01241
Haiku 4.5 $0.00621 $0.00621

Measured 4d ago against content hash 850c78bcd14c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

testivai-oss CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 353 lines

How it starts

The opening of the file, as written. The whole thing — 353 lines — stays where its author put it; the contents beside it link to each section on GitHub.

testivai-oss — Claude Code Guide

This is the public open-source repository for the TestivAI SDKs. All packages here enable fully local visual regression testing — no account, no API key, no server.

Repo layout

packages/
  witness/     @testivai/witness     — core SDK: CLI, diff engine, baselines, HTML report
  playwright/  @testivai/witness-playwright  — Playwright reporter + capture adapter
  webdriverio/ @testivai/witness-webdriverio — WebdriverIO service + capture
  selenium/    @testivai/witness-selenium    — Selenium WebDriver capture adapter
  mcp/         @testivai/mcp                 — MCP server: results + diff images for AI agents (approve_snapshot/approve_all act only when a human confirms)

action/        testivai/testivai-oss@v1      — GitHub Action: post PR comment + commit status
approve/       testivai/testivai-oss/approve@v1 — GitHub Action: /testivai approve command handler
review/        testivai/testivai-oss/review@v1  — GitHub Action: Claude triages each diff (glitch / intended change / bug / possible bug); advisory, `enabled: false` turns it off
publish/       testivai/testivai-oss/publish@v1 — GitHub Action: publishes reports to the repository's GitHub Pages site, rebuilt from checked data, and links them in PR comments

plugins/claude-code/testivai-report/ — Claude Code plugin (function hooks): `/testivai-report` shows the report whole in the app (images inlined into report.standalone.html, shown with SendUserFile), a pane lists each snapshot's reading, a toast after a run; tests with `claude plugin test`, listed by `.claude-plugin/marketplace.json`

examples/      minimal working examples per framework
docs/          public Markdown documentation
e2e/           OSS smoke E2E test suite

Package manager

pnpm (version set in packageManager field of root package.json).
Never use npm or yarn inside this repo. Use pnpm for all installs, builds, test runs.

Common commands

pnpm install          # install all workspace deps
pnpm lint             # biome lint (lint-only; no formatter)
pnpm build            # tsc compile all packages
pnpm test             # run unit tests across all packages (jest)
pnpm e2e              # run OSS smoke E2E suite
pnpm pack:dry         # dry-run npm publish to validate artifacts
pnpm changeset        # add a new changeset entry (use before PRs that change public API)
pnpm version-packages # bump versions from changesets (run by CI, rarely manual)
pnpm release          # publish to npm (run by CI release workflow only)

Read the full file on GitHub · 353 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago Changed · +2 lines · +116 tokens per session 850c78bcd14c
  2. 7d ago Changed · +51 tokens per session 5c761afebb0e
  3. 8d ago Changed · +48 lines · +882 tokens per session bac0a489fb4b
  4. 10d ago Changed · +8 lines · +325 tokens per session 91ae609aeab4
  5. 11d ago Changed · +71 lines · +1,706 tokens per session a07f57f0d561
  6. 13d ago Changed · +8 lines · +238 tokens per session 3b7421a62d2f
  7. 15d ago Changed · +17 lines · +445 tokens per session 508b22017f57
  8. 17d ago Changed · +1 lines · +20 tokens per session ce01581e81af
  9. 25d ago Changed · +5 lines · +120 tokens per session 91e7b780162f
  10. 2mo ago First seen · 193 lines · 2,303 tokens per session scan A 90cd67e21bc9

Subscribe to this mod's changes

testivai-oss CLAUDE.md is an instructions file published in the GitHub repository testivai/testivai-oss (6 stars, last pushed 4d ago), licensed MIT. It adds 6,206 tokens to every session, about $0.0248 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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